Right now it makes the numbs in my sig with shorty headers. 
bassani true duals?
they also make it in aluminized for 799.00 there are at least 6 others running it here locally in the orlando area. they just don't post up here.
my original thread with dyno results rom both of my cars and 98t56TA
https://ls1tech.com/forums/showthrea...hlight=bassani
my dyno test of borla vs bassani tru-dual
https://ls1tech.com/forums/showthrea...hlight=bassani
the sponsor special thread
https://ls1tech.com/forums/showthrea...hlight=bassani
my original thread with dyno results rom both of my cars and 98t56TA
https://ls1tech.com/forums/showthrea...hlight=bassani
my dyno test of borla vs bassani tru-dual
https://ls1tech.com/forums/showthrea...hlight=bassani
the sponsor special thread
https://ls1tech.com/forums/showthrea...hlight=bassani
The bassani true duals are nice, but at the price for the stainless version I think I'd rather do a cam, valvetrain and LS6 intake swap. Maybe the bassani system will come down to a more reasonable price one day.
maybe when the AFR heads come down, the bassani will. 
waiting for the steel cartel to decide they have enough money and drop their prices first. this particular grade of stainless ss T439. The 439 stainless steel has a higher nickel and chromium content than t409. other companies use T309 and T409. so, when pricing systems, look deeper into what it's made out of. there are many different types of stainless out there. until then, the aluminized is the next cheapest at 799.00 considering you are replacing the entire catback + the y-pipe, that's good deal. i priced the borla at 800 with the slp y-pipe at 200 in the sponsor special thread. and i made 15 rwhp more over the borla system. another person made more over the magnaflow system. but, yes, you can get more out of doing a cam, intake and valvetrain at the same price. but still leave some power on the table. there is also lanes and TSP dumped duals as well.
waiting for the steel cartel to decide they have enough money and drop their prices first. this particular grade of stainless ss T439. The 439 stainless steel has a higher nickel and chromium content than t409. other companies use T309 and T409. so, when pricing systems, look deeper into what it's made out of. there are many different types of stainless out there. until then, the aluminized is the next cheapest at 799.00 considering you are replacing the entire catback + the y-pipe, that's good deal. i priced the borla at 800 with the slp y-pipe at 200 in the sponsor special thread. and i made 15 rwhp more over the borla system. another person made more over the magnaflow system. but, yes, you can get more out of doing a cam, intake and valvetrain at the same price. but still leave some power on the table. there is also lanes and TSP dumped duals as well. Last edited by mrr23; Apr 30, 2005 at 10:19 PM.
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Originally Posted by Redneck Z
The bassani true duals are nice, but at the price for the stainless version I think I'd rather do a cam, valvetrain and LS6 intake swap. Maybe the bassani system will come down to a more reasonable price one day.
Considering the airflow increa and subsequent supporting modifications required (such as intake system and tuning) to tune it, you're bringing in a whole other set of variables that may effect net results if you indeed compare it to a common catback y system. The Bass is assembled for each car individually, with more research and design time than some of the custom dumped systems where fitment is less crutial.
If you look at the cosmetics as a different characteristic, the system exits out the original locations, which on TAs makes the whole setup that much more effective without the additional cost of custom plumbing or welding. High velocity airflow (ie, lots of rpms) work well too because the system rivals cutouts for total flow actually...there are no baffles or chambers in the entire length. I was surprised at how the total flow of the system was rotated in the positive direction. Not what I expected nonethess solid gains and a good foundation for cam heads or whatever else.
Now, since the bassani is both mandrel pipes and true dual with siamese x pipe...even on a bolt on car the cost/gains ratio is favorable for roll ons or the track. There could be several combinations with the bassani, including shorties, or stock manifolds, mid length and even long tube headers, all of which will show positive increases in airflow based on any of the existing catbacks.
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Verdad Gallardo With the bassani td's I hear of people making good gains under the curve vs. a good catback. I would think that with stock exhaust manifolds, the td system would only show gains under the curve and not peak horsepower. I think what you do behind the cats doesn't make a very big difference in power as long as you have a decent flowing muffler. With the stock manifolds you can even unbolt the exhaust at the y and not gain anything. It seems like a good catback would be all the necessary backpressure reduction that the stock exhaust manifolds need. Any further reduction would not help since the manifolds are the restriction. Gains under the curve are definately good though, especially if you don't have some good gears. If your car is geared to only see high rpm's for peak power, I don't see how the td system would be much benefit over a 3 inch cutout setup. The way I have my car set up td's would probably be a benefit, I'm just having a hard time justifying the money. Not all catbacks are expensive. You can get a magnaflow, or even a hoooker for around $289. I bought my y-pipe for $100 used(wouldn't have bought it otherwise). The horsepower to dollar ratio is better for a good catback vs. true duals. Ok...ok....I'm just jealous I don't have bassani true duals. 
Possibly, dual gains can be referenced to a point on a shorty system or manifold system. Though, the scavenging effect of a good crossover increases the volume of the exhaust as well so not as stealthly. Without being similar to the overlap of two distinct exhaust flows.
Originally Posted by Redneck Z
I don't see how the td system would be much benefit over a 3 inch cutout setup.
Now here's results of my exhaust endeavors. This is with 200 n2o.
distance ---stock ----- cutout --- Bassani
60ft ------ 1.987 ------ 2.074 ----- 1.969
1/8 ------- 7.902 ------ 7.912 ----- 7.739
mph ------ 93.20 ------ 93.97 ----- 98.60
1/4 ------ 12.102 ----- 12.080 ---- 11.814
mph ----- 117.12 ----- 118.06 ---- 121.35
i lost torque as you can see by the loss in 60ft time. by the 1/8 mile the cutout caught back up to the stock system. then in the 1/4, the cutout gained me 1 mph. overall, i gained squat in the 1/4 mile ET. andi still have stock manifolds and cats to boot. i'm waiting on the tri-y headers bassani is developing right now for the f-bodies.
Originally Posted by Redneck Z
The way I have my car set up td's would probably be a benefit, I'm just having a hard time justifying the money. Not all catbacks are expensive. You can get a magnaflow, or even a hoooker for around $289. I bought my y-pipe for $100 used(wouldn't have bought it otherwise). The horsepower to dollar ratio is better for a good catback vs. true duals. Ok...ok....I'm just jealous I don't have bassani true duals.
yes it's hard to justify when you already have an exhaust system. understood. but, as you can see, everyone that has reported with actual dyno/track results, have gained. yes, there are cheaper systems out there. which goes back to what materials they are made of. and how much material used as well. duals have more materials used because of the second pipes. 98t56TA just showed it beating a magnaflow system. you've got to look at the price difference between the two with the additional gain to see if it's worth swapping for you. and you can sell yours as well to offset the cost.
not sure exactly when. i'm waiting on the prototype set now myself. got pushed back due to scheduling events. like the PRO/NMCA i was cat with them back on april 1-3. http://stealthram.com/nmcabradenton.html over 100 pics i took while i was there.
they do not make shorties or longtubes. they call them optimum length headers. they figure out the correct length to make the broadest range of torque. real innovative company. i do not know the exact measurements, lengths, or if they are going to be smog headers. most likely they will because i asked darrell if they are going to have their metallicats with them and he said yes.